Muffler cut-out.



A. A. 1v1/ALD.v

MUFFLER CUT-OUT.

APPLICATION FILED IAN. 21|, 1915.

Patented May16, 1916.

2 SHEETS-SHEET l.

THE COLUMBIA PLANUGRAPH co.. WASHINGTON, D. C.

A. A. EWALD.

MUFFLER CUT-OUT.

APPLICATION FILED 1AN.2I. 1915.

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MUFFLER CUT-OUT.

Specification of Letters Patent.

Patented May 16, 1916.

Application led January 21', 1915. Serial No. 3,541.

To all whom t may concern:

Be it known that I, ARNO A. EwALD, a citizen of the United States,residingat Oakfield, in the county of Fond du Lac and State ofWisconsin, have invented certain new and useful Improvements in MufflerCut-Guts; and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to improvements in muiier cut-outs and moreparticularly to those adapted for use on motor vehicles.

The main object of the invention is to provide a device of thischaracter which may be stamped from a number of at sheets of metal,preferably steel, thereby facilitating the manufacture of the device.

A further object of the invention is to so construct the cut-out as toallow exhaust gases to readily escape without passing through a numberof couplings as is common with mostforms of cut-outs now in use.

In carrying out this last named object, a further object is to provide alever fulcrumed between its ends to swing in a plane transverse to theexhaust pipe, to curve one end of said lever to conform to the shape ofthe side of the exhaust pipe having the opening, and to widen this partof the lever, whereby it constitutes a valve plate.

Yet another object is to provide a single coil spring for returning afoot pedal, `used in operating the cut-out, and the cut-out to normalposition.

With the above and minor objects in view, the invention resides incertain novel features of construction and combination herein describedand claimed and shown in the drawings wherein Figure 1 is a top planview of a portion of an automobile, showing the application of theinvention thereto; Figs. 2 and 3 are vertical transverse sections asseen on the lines 2 2 and 3u?) of Fig. 1, the cut-out being shownrespectively in open and closed positions; Figs. 4 and 5 arerespectively top and bottom plan views of the cut-out and a portion ofthe exhaust pipe; Fig. 6 is a horizontal section taken on the plane ofthe line 6 6 of Fig. 3; Fig. 7 is a disassembled perspective view of aclamp to be described; and Fig. 8 is a similar view of the abovementioned lever.

In these drawings, constituting a part of this application, a portion ofan automobile A is shown which is equipped with an engine E, an exhaustpipe P which leads rearwardly from said engine beneath the floor of thecar, and with a muffler M which is located near the rear end of the pipeP. At a point interposed between the muffler M and the engine E, thepipe P is provided with a circular opening O. It is the purpose of thepresent invention, to open or close this opening at will. Inaccomplishing this result, the structure now to be described isemployed.

Contacting with the lower side of the pipe P, which side is equippedwith the opening O, is a semi-circular clamping plate 1 which isprovided with a central opening 2 registering with said opening O asclearly seen in Fig. 3. The upper edges of the plate l, are bentlaterally to form attaching flanges 3 and 3', the intermediate portionof the latter being bent downwardly to provide pivot ears 4. Coactingwith this clamping plate l is a second semi-circular clamping plate 5which embraces the upper ,half of the pipe P and whose lower edges arebent to provide laterally extending flanges which overlie the flanges 3and 3', bolts 6 being then passed through these flanges, whereby acomplete clamp is provided, which is readily adaptable to most types ofexhaust pipes.

Fulcrumed between its ends upon a pin 7 which passes through the twoears el, is an operating lever 8 which is preferably formed of steel sopressed as to provide a pair of depending pivot ears 9 which contactwith the ears l and through which the pin 7 passes, one end of the leverrising from the ears 9 while the other end thereof curves downwardly andlaterally therefrom beneath the semi-circular plate 1. At this point,the lower end of the lever 8' is so curved as to conform to the shape ofthe plate l and is widened as seen at l0, to provide a valve plate fornormally closing the v o enin therein, said late bein here shown P e P ghaving its opposite end connected to the lower end of the upright arm 14of a bell crank lever 15, the latter being fulcrumed to tal arm pivotedto an upright link 16 whose upper end is equipped with a foot pedal 17.As most clearly seen in Figs. 2 and 3, the arm 14@ of the bell cranklever is also connected to the opposite end of the lever 8, by a link18, whereby depression of the horizontal arm bysaid lever will move thelever from the position seen in Fig. 3 to `that seen in Fig. 2,whereupon the exhaust gases are free to travel outwardly through ,theopenings O and 2. This movement on the part of the bell crank and leverplaces the spring 13 under tension, which tension is then eX- erted toreturn the ports to normalposition, when so desired.

In most cases, it becomes expedient `to provide means whereby thecut-out may be maintained in open position. For thispurpose, one edge ofthe link 16 is provided with a notch 19 which is `engaged with a portionof the bracket through vwhich it slides, as indicated in dotted lines inFig. 2.

From the foregoing description, it will be seen that a very simple andefiicient device has been provided which maybe easily and inexpensivelymanufactured of pressed steel or other suitable material, and thatalthough a number of moving parts are employed, but one spring isnecessary for returning all of these parts to their normal positions.'Furthermore, this one spring, designated by the numeral 13 in thedrawings, also normally moves the arm 14 toward the the lever 8, therebyretaining connections of the link 18 with said arm Vand said lever, intight contact, thereby preventing rattling of the various parts ofthedevice.

I claim: 1. .The combination with an exhaust pipe having an opening,

Copies of this patent .may lbe obtained fvor'voe cents each, pyAadrgresjsi-11ng `the upper end of the pivotal.

of a semi-circular clamping Plate contacting throughout its width withsaid side of the pipe, said plate having an opening Aregistering withthat in the pipe, a clamping member passing around the other side of thepipe and secured to said clampin plate, whereby a complete clamp isproviA ed, a lever fulcrumed to said clamp to .swing in a planetransverse to the pipe, and a valve plate carried by the lever,curved to conform to the Shape of `thefsen'ii-circular clamping plateand normally closing the opening therein.

V2. rIlhe combination with an exhaust vpipe having an opening, of asemi-circ`ular clamp# ing plate contacting ,throughout its width withsaid side ofthe pipe, said plate having an opening registering with thatin the pipe, a clamping member passing around the other' side of thepipe' and secured to said'clamping plate, whereby acomplete clamp isprovided, a lever .fulcrumed between its ends to said clamp ,to swing ina plane 4transverse to the pipe, the portion of said lever to one sideof its `fulcrum being VVwidened andcurved to conform to the shape Vofthesemicircular clamping plate, whereby to constitutea `valve for closingthe opening therein, and means connected with the other end of the leverfor rocking the same around its pivot ,to `movev said plateto inactiveposition.

`3.y In combination, a muffler cut-out includinga lever fulcrumedbetween lits ends,

an operating lever spaced laterally from the cut-,out and having an end.movable (away therefrom, alink connecting lsaid end `of the operatingvlever l.with one ,end of thelever on thecut-out, `anda coil springconnecting fthe Y otherend of 4 said lever on .the cutiout with thelaforesaid end of the operating lever.

In testimony whereof I havehereunto set my hand in .presence of twosubscribing witnesses.

' Anno A. EwALD.

Witnesses:

F. E. WILLARD, l W. E. sBRISTOL.

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